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长春光学精密机械与物... [5]
金属研究所 [2]
上海光学精密机械研究... [1]
西安光学精密机械研究... [1]
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OAI收割 [9]
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会议论文 [5]
期刊论文 [4]
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End-to-end learning interpolation for object tracking in low frame-rate video
期刊论文
OAI收割
IET Image Processing, 2020, 卷号: 14, 期号: 6, 页码: 1066-1072
作者:
Liu, Liqiang
;
Cao, Jianzhong
  |  
收藏
  |  
浏览/下载:73/0
  |  
提交时间:2020/05/20
video signal processing
learning (artificial intelligence)
object tracking
interpolation
mobile computing
low frame rates
implicit video frame interpolation sub-network
object tracking
low frame-rate video
high frame-rate latent video
effective end-to-end optimisation
frame rate
tracking accuracy
semantic video analytics
end-to-end learning interpolation
subsequent semantic analytics
bandwidth constraints
analytics performance
Achieving ultrafine dual-phase structure with superior mechanical property in friction stir processed plain low carbon steel
期刊论文
OAI收割
Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing, 2013, 卷号: 575, 页码: 30-34
P. Xue
;
B. L. Xiao
;
W. G. Wang
;
Q. Zhang
;
D. Wang
;
Q. Z. Wang
;
Z. Y. Ma
收藏
  |  
浏览/下载:35/0
  |  
提交时间:2013/12/24
Friction stir processing
Steel
Dual phases
Ultrafine grained
microstructure
grain-size
tensile properties
high-strength
strain-rate
microstructure
deformation
ferrite
transformation
ductility
aluminum
Panoramic aerial camera image motion measurement using a hybrid system (EI CONFERENCE)
会议论文
OAI收割
2010 3rd IEEE International Conference on Computer Science and Information Technology, ICCSIT 2010, July 9, 2010 - July 11, 2010, Chengdu, China
作者:
Jia P.
收藏
  |  
浏览/下载:29/0
  |  
提交时间:2013/03/25
Image motion compensation is significantly important for aerial camera photograph. To execute the compensation
we must determine the image motion exactly. This paper proposes a method of real-time image motion measurement for panoramic aerial cameras based on image processing using a hybrid system. Two cameras are simultaneously used in the hybrid system. One main linear CCD for imaging
while the other auxiliary low resolution high frame rate area CCD for determining the image motion based on 2D spatial correlation. The demanding computational requirements for the real-time 2D spatial correlation are covered by a joint transform optical correlator. Simulation test results show that the accuracy is improved and the measurement error is within 0.2 pixels for input images with SNR=1 dB. 2010 IEEE.
Micro-motion exposure method based on PZT piezoelectric ceramics (EI CONFERENCE)
会议论文
OAI收割
International Symposium on Photoelectronic Detection and Imaging 2009: Material and Device Technology for Sensors, June 17, 2009 - June 19, 2009, Beijing, China
作者:
Meng Z.
;
Meng Z.
收藏
  |  
浏览/下载:110/0
  |  
提交时间:2013/03/25
There mainly is laser digital photofinishing technique and digital photofinishing technique based on LCD consisting of TFT and LCOS in the digital photofinishing field at the present time. The former have a good many merit such as wide color gamut
high processing rate
large output size and high brightness
but his cost is very high
his maintain technique being comparatively complex
that result in difficult use for people. The utilization ratio of the latter is low because of lower resolution and lower aperture ratio for LCD
but the digital photofinishing based on LCD have lower cost and higher utilization ration
being suitable for people's current standard of living. Considering above mentioned problem
a micro-motion exposure method based on PZT piezoelectric ceramics used in digital image photofinishing is presented. The two-dimension micro-motion exposure system consisting of PZT piezoelectric ceramics
LCD panel
polarizing film and spring strip is designed. By means of PZT piezoelectric ceramics the LCD panel is removed about the one half of the pixel size of the LCD panel for four times from the original place
at the same time imaging system is exposed four times at the printing paper. The software is used to control the time synchronization
the exposure time and motion range of the LCD panel. The system has advantages such as shorter response time than 0.1seconds
lesser motion error than 0.01 microns
high stability and repeatability. Experimental results show that the proposed micro-motion exposure method improve the picture brightness and enlarge output size
at the meantime reducing the cost of the system. 2009 SPIE.
A high-speed acquisition and processing system of the laser speckle signal on the magnetic fluid (EI CONFERENCE)
会议论文
OAI收割
International Symposium on Photoelectronic Detection and Imaging 2009: Laser Sensing and Imaging, June 17, 2009 - June 19, 2009, Beijing, China
作者:
Sun Y.
;
Sun Y.
;
Wan Q.-H.
收藏
  |  
浏览/下载:32/0
  |  
提交时间:2013/03/25
In order to achieve the dynamical detection and real-time analysis of the movement status of the magnetic fluid
according to the difficulties of the detection of the magnetic fluid
established a high-speed acquisition and processing system of laser speckle signal on the magnetic fluid. First of all
the FPGA (EP2C8T144C8N) drived the linear array CCD(TCD1501D) to scan in the corresponding time sequence given by the computer
collected the laser speckle interferometric image in rapid change on the surface of the magnetic fluid
which followed the movement of the magnetic fluid
and the signal collected by CCD was converted into the digital data through the high-speed A/D convertor and stored into the internal buffer FIFO of the FPGA
whose width and depth were designed by the user as required. Then
the FPGA sent the digital signal of the laser speckle interferometric images into the computer through the USB2.0 highspeed differential bus
whose transmission rate can reach 480Mb/s in theory. Finally
the distribution of the laser speckle on the magnetic fluid was messy and random
which carried certain information about the surface of the magnetic fluid
based on the theories of the statistic correlation and the subdivision of images
analysing and processing the laser speckle interferometric images
indirectly got the movement status of the magnetic fluid under the electromagnetic field. The experimental results show that: the High Speed Acquisition and Processing System has the advantage of full-court
non-contact
non-invasive
high-precision and high reliability and so on. The detection resolution of high speed acquisition and processing system is superior to 1m and the sample rate is 3Msps
which basically meets the requirements of the magnetic fluid movement state detection. 2009 SPIE.
Embedded system of image storage based on Fiber Channel (EI CONFERENCE)
会议论文
OAI收割
Quantum Optics, Optical Data Storage, and Advanced Microlithography, November 12, 2007 - November 14, 2007, Beijing, China
作者:
Wang H.
;
Wang H.
;
Wang H.
;
Wang H.
;
Chen X.
收藏
  |  
浏览/下载:22/0
  |  
提交时间:2013/03/25
In domains of aerospace
aviation
aiming
and optic measure etc.
the embedded system of imaging
processing and recording is absolutely necessary
which has small volume
high processing speed and high resolution. But the embedded storage technology becomes system bottleneck because of developing slowly. It is used to use RAID to promote storage speed
but it is unsuitable for the embedded system because of its big volume. Fiber channel (FC) technology offers a new method to develop the high-speed
portable storage system. In order to make storage subsystem meet the needs of high storage rate
make use of powerful Virtex-4 FPGA and high speed fiber channel
advance a project of embedded system of digital image storage based on Xilinx Fiber Channel Arbitrated Loop LogiCORE. This project utilizes Virtex4 RocketIO MGT transceivers to transmit the data serially
and connects many Fiber Channel hard drivers by using of Arbitrated Loop optionally. It can achieve 400MBps storage rate
breaks through the bottleneck of PCI interface
and has excellences of high-speed
real-time
portable and massive capacity.
A high-speed image sensing technique with adjustable frame rate based on an ordinary CCD
期刊论文
OAI收割
optik, 2008, 卷号: 119, 期号: 11, 页码: 548, 552
He Guotian
;
王向朝
;
Li Dailin
;
Hu Jianmin
收藏
  |  
浏览/下载:1286/190
  |  
提交时间:2009/09/18
high-speed image sensor
area array CCD
driving circuit frame rate
signal processing
Optimization of mechanical properties of cast NiAl-28Cr-5.5Mo-0.5Hf alloy
期刊论文
OAI收割
TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA, 2006, 卷号: 16, 页码: S191-S196
作者:
Guo Jian-ting
;
Gao Qiang
  |  
收藏
  |  
浏览/下载:25/0
  |  
提交时间:2021/02/02
NiAl-28Cr-5.5Mo-0.5Hf
processing
microstructure refinement
precipitation strengthening
high solidification rate
Non-contact and on-line cone diameter measuring based on high speed linear CCD (EI CONFERENCE)
会议论文
OAI收割
2nd International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment, November 2, 2005 - November 5, 2005, Zian, China
Guohui Z.
;
Jianhua W.
收藏
  |  
浏览/下载:52/0
  |  
提交时间:2013/03/25
The remarkable improvement of sensing and processing hardware performance makes the non-contact
on-line
high accuracy and high speed measuring possible by means of linear CCD. The goal of this pager is to describe the key questions on designing the cone diameter detecting system by linear CCD. This paper first describes the detecting scheme. In particular
the factors affecting accuracy
such as resolution
voltage difference between neighbor pixels
detecting rate and so on
are analyzed
and the quantitative estimation equations are provided. CCD takes on the photoelectric translation and measuring component double functions
so the waveform of CCD output signal and the affecting factors merit deep discussion. On the basis of discussion
several principles that can be used to improve the boundary recognition accuracy are presented.